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1,113 questions · 1,914 answers · 460 members contributing
157 threads
Potentiometers are used as a
Hana asked · 10 Jan 2013
Isn't it potentiometer relates to variable voltage source?
PART66Online: First of all, potentiometer is a variable resistor. But it can be used as voltage divider to change voltage.
The 5th coloured band on a resistor represents the
Hana asked · 10 Jan 2013
Isn't it the tolerance in coloured band is represent in the 4th band?
PART66Online: If resistor has 4 bands - yes, but question asks for 5 band resistor.
How many amperes will a 28-volt generator be required to supply to a circuit containing five lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a resistance of 5 ohms each?
Edigno_92 asked · 6 Oct 2012
resistance, then use ohms law (I=V/R) to find the total current. It is a tricky calculation to do without a calculator, so round the total resistance up (to 1 ohms) then choose the nearest answer for I.
markino87: all resistance are in parallel, thus the voltage applied on all resistance is the same 28v. by doing V/R u find the current required on each resistance, applying the kirchoff law of current (Itot=sum of each resistance) u 'll find the current=25.23
The 5th coloured band on a resistor represents the
MridulDev asked · 25 Jun 2012
then what is 4th colored band for????
MridulDev: Thanks.
If the cross-sectional area of a conductor is doubled, with voltage constant, the current will
iskandarazli asked · 22 Feb 2012
anybody can help me explain about this?
PART66Online: Hey! Formula for resistance of conductor is: R = (r * L) / A Where r = resistivity of conductor (hyperphysics.phy-astr.gsu.edu/hbase/t...) L = lenght A = cross section area Then apply ohms law: I = U / R
If a 1 ohm circuit produces a 50 W output, the phase angle is
boygeniues007 asked · 8 Jan 2012
how?? plx explain
boygeniues007: thnx
What is the PD of a circuit which has a 40 mA current and a 1 kilohm resistance?
kosala asked · 1 Jan 2012
What is the PD of a circuit which has a 40 mA current and a 1 kilohm resistancese
PART66Online: Hello. V = I x R
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